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To: bugs@httpd.apache.org
Subject: [Bug 54543] New: Compile regex only when need
Date: Sun, 10 Feb 2013 17:20:33 +0000
Message-ID: <bug-54543-7868@https.issues.apache.org/bugzilla/>
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https://issues.apache.org/bugzilla/show_bug.cgi?id=54543

            Bug ID: 54543
           Summary: Compile regex only when need
           Product: Apache httpd-2
           Version: 2.4.3
          Hardware: All
                OS: All
            Status: NEW
          Severity: enhancement
          Priority: P2
         Component: mod_rewrite
          Assignee: bugs@httpd.apache.org
          Reporter: david@ols.es
    Classification: Unclassified

Regular expressions are compiled (with ap_pregcomp) when parsing the
configuration regardless if they will end being used or not.

If it makes sense i can submit a patch that will not compile the regex and
substitute the calls to ap_regexec to calls to a function that will compile the
regex if x->regex is null so only really need regex will be compiled

I think this could improve performance a bit, specially when using END/L flags
and when the request matches the first rules, and will not affect performance
in other cases. Anyway i could implement this as an option if you guys think
that it will be better that way.

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